Coefficient of Restitution — Practice Quiz

Question 1

A ball dropped from 4 m bounces to 1 m. Coefficient of restitution e:

Accepted Answer

0.5

Answer

0.25

Answer

0.707

Answer

1

Question 2

If e = 1, the collision is:

Accepted Answer

Perfectly elastic

Answer

Perfectly inelastic

Answer

Partially elastic

Answer

Impossible

Question 3

A ball with e = 0.8 falls from 5 m. Height after 2nd bounce:

Accepted Answer

2.05 m

Answer

3.2 m

Answer

1.0 m

Answer

0.64 m

Question 4

Coefficient of restitution depends on:

Accepted Answer

On the surfaces in contact

Answer

Only on speed

Answer

Only on mass

Answer

Always 1

Question 5

Perfectly inelastic collision corresponds to:

Accepted Answer

e = 0

Answer

e = 1

Answer

e = 0.5

Answer

e = 2